Have Beholder EC1 and DS2-A.Perfectly tuned it (PID+filters+magnetic link.) but still have some kind of jerkiness of motors, most visible with long zooms...You can see how it looks here:https://youtu.be/eCSu-g6LtwUHere is 800mm, shot handheld and you can see some low freq shake (hands) with high freq motors shake - that looks like rapid left-right pan in a fraction of time.How to avoid that jerkiness?